2024 Tus sau: Sierra Becker | [email protected]. Kawg hloov kho: 2024-02-26 05:10
Txhua tus paub tias qhov tseem ceeb hauv kev ua haujlwm ntawm tus kws yees duab yog lub teeb. Tom qab tag nrho, txawm lo lus "photoography" nyob rau hauv Greek txhais tau tias "lub teeb painting". Yog li ntawd, nws yog ib qho tseem ceeb heev uas tus nqi ntawm lub teeb nkag mus rau lub lens yog qhov zoo. Raws li txoj cai, studio teeb pom kev zoo thiab lub teeb pom kev zoo tshaj plaws yog siv rau qhov no. Tab sis yuav ua li cas yog tias muaj lub teeb ntau dhau los yog nws tsoo lub lens yuav luag ntawm lub kaum sab xis, tsim qhov tsis tsim nyog glare? Tsis txhob tua tam sim no nyob rau hauv ib nrab tsaus ntuj, kiag li tig deb ntawm lub hnub. Qhov ntawd yog dab tsi lub hood yog rau! Qhov no yog ib daim yas puag ncig uas yog ntsia rau ntawm lub lens.
Ib lub lens hood feem ntau yog siv thaum tua tawm tsam lub hnub lossis lwm qhov teeb pom kev zoo. Qhov no yuav pab txhim kho qhov sib piv thiab xim ntawm cov duab uas tshwm sim los ntawm kev thaiv lub teeb rays uas tuaj yeem tsoo lub sensor, nrog rau tsis txhob vignetting (tsaus tsaus nti lossis lightening cov npoo ntawm daim duab). Li noqhov zoo ntawm cov duab uas tshwm sim nce. Lens hoods tseem tiv thaiv tshav ntuj thiab flare los ntawm kev tshwm sim hauv cov duab. Kev tiv thaiv los ntawm lub teeb rays los tsoo lub matrix yog qhov laj thawj tseem ceeb vim li cas thiaj xav tau lub lens hood.
Kuj, ntau tus kws yees duab siv cov ntxaij lim dej: polarizing, ultraviolet, nruab nrab grey thiab lwm yam. Cov khawb me tshaj plaws thiab kev puas tsuaj tau pom nyob rau hauv lub hnub. Lawv zoo nkauj yooj yim mus nkaum - qhov ntawd yog dab tsi lub hood yog rau. Nws tiv thaiv cov teeb ci ncaj qha los ntawm kev cuam tshuam cov chaw puas, yog li lawv tsis tuaj yeem cuam tshuam cov duab zoo. Tau kawg, yog tias peb tsis tham txog cov kab nrib pleb hauv ib nrab ntawm cov lim.
Hais txog kev puas tsuaj. Lub lens hood kuj tiv thaiv koj optics los ntawm lawv. Tsis muaj leej twg muaj kev nyab xeeb los ntawm kev raug xwm txheej (thiab los ntawm banal kov ntawm cov ntiv tes ntawm lub lens, uas muab cov greasy print), yog li lub lens hood tuaj yeem txuag koj thiab koj lub lens ntau dua ib zaug.
Thiab, ntawm chav kawm, tsis muaj dab tsi. tuaj yeem hloov lub lens hood thaum tua hauv nag lossis daus! Koj tsis tuaj yeem piav qhia tias cov tee dej ntws los ntawm lub lens yuav tsis ua rau muaj dab tsi zoo. Yog li ntawd, muaj ib lub hood nrog koj nyob rau hauv cov huab cua phem tsis yog qhov tsim nyog, tab sis nws tsis mob.
Nws tseem tsim nyog sau cia tias lub lens hoods rau cov lo ntsiab muag txawv txawv ntawm ib leeg. Lawv tuaj yeem ua cone-puab, petal lossis cylindrical. Nws yog qhov zoo tshaj plaws los sab laj nrog tus neeg muag khoom lossis tus kws yees duab tshaj lij txog lub lens hood twg yog qhov zoo rau koj lub hom phiaj tua thiab lens. Nws yog ib qho tseem ceeb kom ua tib zoo ua qhov no, vim hais tias ib qho tsis raug xaiv lub lens hood yuav tsis tsuas yog ua kom tiav nwskev ua haujlwm, tab sis kuj tseem yuav ua rau muaj kev cuam tshuam ntau yam tsis yooj yim rau tus kws yees duab. Yog li, peb pom tias lub lens hood yog dab tsi. Nyob rau hauv kev xyaum, nws yog siv nyob rau hauv studio photography, thaum oblique lub teeb rays ntaus lub lens, thaum yees duab tiv thaiv lub teeb, hiav txwv thiab daus toj roob hauv pes (txij li thaum daus thiab dej xav txog lub rays), nyob rau hauv huab cua phem, sunsets thiab tsuas yog los tiv thaiv optics. Yog tias hom kev tua no tsis nyob hauv koj lub voj voog ntawm kev txaus siab, koj yuav tsis poob dab tsi los ntawm kev tsis kam yuav lub lens hood. Thiab yog tias koj niaj hnub ua haujlwm hauv cov hom no thiab tab tom nrhiav txoj hauv kev los txhim kho cov duab zoo - zoo, tam sim no koj paub txoj hauv kev zoo!
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